CAJ | 학술논문

本文以食用油行业为例，利用2009～2012年全国11个副省级城市的企业水平统计数据．对零售市场中产品价格波动与企业市场势力的关系进行了经验研究。检验结果发现．价格波动对零售商可实现的市场势力程度具有显著影响，当价格处于上涨阶段时．零售商跨期价格上涨幅度大于当价格处于下降阶段时零售商跨期价格的下跌幅度。这表明零售商有能力利用价格信息不对称及价格传递的不完全，以“模糊策略”来提升自身的市场势力溢价。进而，本文基于浙江省5个城市的监测数据，对食用油零售行业中企业市场势力水平进行了估算，得到其市场势力溢价程度为18％。据此推算，5个样本城市若能提高食用油零售行业的竞争程度，在2009--2012年总计存在着增进70多亿元社会福利的空间。最后．本文具体从价格分析、标准规范及行业监管等方面系统地提出了相关政策建议。
본문이식용유행업위례，이용2009～2012년전국11개부성급성시적기업수평통계수거．대령수시장중산품개격파동여기업시장세력적관계진행료경험연구。검험결과발현．개격파동대령수상가실현적시장세력정도구유현저영향，당개격처우상창계단시．령수상과기개격상창폭도대우당개격처우하강계단시령수상과기개격적하질폭도。저표명령수상유능력이용개격신식불대칭급개격전체적불완전，이“모호책략”래제승자신적시장세력일개。진이，본문기우절강성5개성시적감측수거，대식용유령수행업중기업시장세력수평진행료고산，득도기시장세력일개정도위18％。거차추산，5개양본성시약능제고식용유령수행업적경쟁정도，재2009--2012년총계존재착증진70다억원사회복리적공간。최후．본문구체종개격분석、표준규범급행업감관등방면계통지제출료상관정책건의。
This paper investigates empirically the relationship between the fluctuation of price in retail market and firm＇s market power, using an administrative data set of edible oil at firm＇s level from 11 vice-provincial cities of China from 2009 to 2012. The result shows that the fluctuation of price has evident effect on firm＇s realizable scale of market power, and the extent of retailer＇s intertemporal price markup is greater as price rising up than as it＇s falling down. This is evidence for those retailers have the capacities of implementing obfuscation strategy to expand their market power, taking the advantage of asymmetry of price information and incompleteness of price pass-through during the different periods of price＇s fluctuation. Furthermore, the paper measures the extent of retailers＇ market power in edible oil sector with a unique data set of 5 cities in Zhejiang province, and shows that the markup ratio reaches to 0.18. According to this result, the social welfare can be enhanced by an extent of more than 7 billions RMB totally in these 5 cities from 2009 to 2012. Finally, it provides some relevant policy implications from aspects as monitoring of firm＇s behaviors, normalization of their pricing strategy and supervision of large retail enterprises.